us that the suspects killed a police officer who was on the force of the massachusetts institute of technology, a campus police officer was shot to death in his police cruiser, his name is sean collier, 26 years old. he joined the force only in 2012. he was new at m.i.t. in terms of being a police officer there. he was found dead in his police car. to get back to the narrative of last night, a car was carjacked, a man thrown out of the c called police and said that he believed that the marathon bombers had just taken his car. police found the car, began a chase, bombs were thrown from the car at the police officers. there was a running gun battle. the car stopped. there was a gun battle in which 200 rounds of ammunition were fired and bombs again were thrown at the police officers. in that fire fight 26-year-old tamerlan tsarnaev was killed. a police officer was gravely wounded. from last night, that is one officer dead, another wounded. weer to told that the wounded officer is in critical but stable condition in the hospital after surgery tonight. tamerlan tsarnaev was killed. his brother, th